python: Restore the experimental DTrace patch

The old patch had a lot of whitespace differences, and they were failing with
Python 2.7.4. In addition to removing the whitespace differences, configure.in
was removed from the patch, as configure is being patched already.

This should resolve #19203 and reverts @fbf7be913a. #19203 was caused by the DTrace patch being left in the formula while the option was removed and upgrades were still trying to apply the patch.